Peripubertal
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Impact of feeding cottonseed coproducts on reproductive system of male sheep during peripubertal period
ABSTRACT Cottonseed coproducts contain gossypol which can have specific effects upon the male reproductive system. We evaluated the reproductive development of male lambs close to puberty fed on three cotton coproducts. Twenty-four 5-month old male lambs received four diets: 20 % of dry matter intake of whole cottonseed (WCS), high oil cottonseed meal (CSC),
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-12
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2. Ultra-sonografia de machos Nelore na fase peri-puberal.
1997
Revista brasileira de reprodução animal. Publicado em: 2011
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3. Restrição protéica in utero : desenvolvimento sexual e histofisiologia do sistema reprodutivo de ratos machos / In utero protein restrition : sexual development and histophysiology of the rat male reproductive tract
In the past few years the worldwide recognition of the relevance of nutrition as a basis for social and economic development has been growing. In developing countries such as Brazil undernutrition is a socioeconomic problem caused by poor nutrition and low income. The birth of children with low birth weight is considered an important public health problem, w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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4. Alternativas para indução da ovulação e do estro em novilhas de corte peripúberes / Alternatives to estrus and ovulation induction in peripubertal beef heifers
O experimento 1 verificou o efeito de um protocolo de indução e sincronização de estros em novilhas sobre a cronologia das parições e a repetição de crias como primíparas. 194 novilhas Hereford e Braford foram divididas em 2 grupos: Tratamento, submetido a um protocolo misto de observação e sincronização de estros e inseminação artificial a te
Publicado em: 2008
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5. Peripubertal orchidectomy transitorily affects age-associated thymic involution in rats
The role of gonadal hormones in induction and, particularly, maintenance/progression of rat thymic involution, which normally starts around puberty, was reassessed by examining the effects of peripubertal orchidectomy on thymic weight and morphometric parameters at different times up to the age of 10 months. Up to 6 months post-castration both thymic weight
Brazilian Journal of Medical and Biological Research. Publicado em: 22/10/2007
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6. Reduced Behavioral Response to Gonadal Hormones in Mice Shipped during the Peripubertal/Adolescent Period
Animals shipped from commercial suppliers to laboratories are exposed to a wide variety of stressors. Female C57Bl6/J mice shipped during the peripubertal/adolescent period (6 wk old) display lower levels of female sexual behavior in response to estradiol and progesterone injections after ovariectomy when tested in adulthood than female mice shipped in adult
The Endocrine Society.
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7. Enduring Influences of Peripubertal/Adolescent Stressors on Behavioral Response to Estradiol and Progesterone in Adult Female Mice
Exposure to stressors during particular stages of development leads to acute and long-term physiological and behavioral changes. We have reported that shipping mice during the peripubertal/adolescent period results in decreased induction of feminine sexual behavior by estradiol and progesterone in adult female mice. To study further the factors involved in t
The Endocrine Society.
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8. Excessive Ovarian Production of Nerve Growth Factor Facilitates Development of Cystic Ovarian Morphology in Mice and Is a Feature of Polycystic Ovarian Syndrome in Humans
Although ovarian nerve growth factor (NGF) facilitates follicular development and ovulation, an excess of the neurotrophin in the rodent ovary reduces ovulatory capacity and causes development of precystic follicles. Here we show that ovarian NGF production is enhanced in patients with polycystic ovarian syndrome (PCOS) and that transgenically driven overpro
The Endocrine Society.
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9. Sex differences in the regulation of Kiss1/NKB neurons in juvenile mice: implications for the timing of puberty
In mammals, puberty onset typically occurs earlier in females than in males, but the explanation for sexual differentiation in the tempo of pubertal development is unknown. Puberty in both sexes is a brain-dependent phenomenon and involves alterations in the sensitivity of neuronal circuits to gonadal steroid feedback as well as gonadal hormone-independent c
American Physiological Society.
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10. Increased hypothalamic GPR54 signaling: A potential mechanism for initiation of puberty in primates
To further study the role of GPR54 signaling in the onset of primate puberty, we used the monkey to examine the ability of kisspeptin-10 to elicit the release of gonadotropin-releasing hormone (GnRH) precociously, and we describe the expression of GPR54 and KiSS-1 in the hypothalamus during the peripubertal period. Agonadal juvenile male monkeys were implant
National Academy of Sciences.
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11. Maternal Environment and Genotype Interact to Establish Diabesity in Mice
Obesity, a major risk factor for type II diabetes, is becoming more prevalent in Western populations consuming high calorie diets while expending less energy both at the workplace and at home. Most human obesity, and probably most type II diabetes as well, reflects polygenic rather than monogenic inheritance. We have genetically dissected a polygenic mouse m
Cold Spring Harbor Laboratory Press.